My noobs ios tank

[Tagtan]

Redsea blue bucket salt , fm ultraphos , fm stn , chemi clean carbon , fm color element , triton other methods , bio digest bacteria, amino arcopower , Water change every week 20 % kh 7.5 mag 1280 ca 460 po4 0.05 no3 10  

100 litre tank no chiller no sump , currently using fan for night , as for day time my aircon on , my tank temperature at 23+-